A hydraulic press includes a workbench having four corners provided with uprights. The uprights are arranged in two rows front and rear, and the tops of the uprights in each row are connected by an upper beam extending in a left-right direction. Tie rods are inserted in the front and rear of each upright. The tie rods each have an upper end protruding from the top of the upper beam and fixed to the upper beam by an upper nut and a lower end protruding from the bottom of the workbench and fixed to the workbench by a lower nut. A central cylinder is provided at the center of the upper beam. Side cylinders are symmetrically arranged on the left and right of the central cylinder. The lower ends of plungers of the central cylinder and the side cylinders are fixedly connected to a top of a slider.

A hydraulic pressing tool which is particularly suitable for pressing pipe fittings, and which has a hydraulic pump connected to an electric motor is provided. With the aid of the hydraulic pump, hydraulic fluid is pumped from a tank into a piston chamber to operate the hydraulic piston. The pressure prevailing in the piston chamber is determined by a pressure sensor. When a pressure limit is reached, a solenoid valve is opened by the control device such that the hydraulic fluid flows back out of the piston chamber, through the channels, and into a reservoir.

The die cushion device includes a first hydraulic cylinder for supporting a cushion pad, and a first hydraulic circuit for driving the first hydraulic cylinder. The first hydraulic circuit is a hydraulic closed circuit including a logic valve connected between a die cushion pressure generation line and a system pressure line, and a hydraulic pump driven by a first servomotor for applying a pilot pressure to the logic valve. The first controller controls the first servomotor (pilot pressure) based on a first pressure command corresponding to the die cushion force and the pressure detected by the first pressure detector to control the pressure in a lower chamber of the first hydraulic cylinder so that the pressure is equal to a pressure corresponding to the first pressure command.

A display device for punching and/or pressing machines. The display device can be constructed to be modular and of compact size so as to be positioned as desired on new and existing machine designs. The display device is formed with displays, which are configurable to provide a plurality of qualitative and quantitative information. The display device can be configured to be function with consoles of punching and pressing machines so as to be one or more of a supplemental device, an interfacing device, and an interactive device.

A solar-powered waste compactor comprises a waste container for housing waste, a compactor ram actuated by a hydraulic cylinder and piston assembly for compacting the waste in the waste container, and a hydraulic power unit operably associated with the hydraulic cylinder and piston assembly for powering the compactor ram. The hydraulic power unit comprises a motor/pump assembly including a pump unit, a single-phase electric motor driving the pump unit and a flow control valve operating the motor/pump assembly at first or second flow rate depending on an operating pressure. The hydraulic power unit further comprises a battery unit, a solar panel to charge the battery unit, a DC-to-AC inverter, a single-phase AC power inlet connectable to a source of a single-phase electrical power grid, and a reversing contactor providing the electric current only from the inverter or the power inlet at any given time.

In variants, the system can include a press frame, a set of conveyor systems, a set of core units, a set of pressure control systems, a power source, and/or any other suitable system components. The system components can cooperatively form a continuous press for manufacturing composite boards from composite board material by applying pressure and/or heat to the composite board material. In variants, the system can provide a modular, extensible, and lightweight continuous press that can be elongated or shortened by adding or removing modular core units to the core section.

A compression spring model included in a processor in the die cushion control apparatus refers to a load characteristic curve of a compression spring when assuming that a hydraulic cylinder is a compression spring, generates a cushion load command in accordance with a spring constant and a deflection amount of a compression spring and generates a control command based on a deviation between the generated cushion load command and an actual cushion load. In accordance with the control command, the drive motor and the hydraulic pump are driven, and an upward load is generated on the cushion pin by the hydraulic cylinder. Thus, even when the cushion pin rises due to a setting error or the like for the press die height, the cushion load command decreases in accordance with the deflection amount of the compression spring and inhibits an abnormal pushing-up action of the cushion pin.

A hydraulic power unit for full compactor automation comprises a housing with a support frame, electrical control cabinet and plate cover; a reservoir; an electric motor on the frame; a hydraulic pump directly coupled to the motor; a CAN control system including a CAN controller, a gateway and antennae mounted to the housing and wherein the unit measures the current draw by the motor with a current transformer and wherein a signal level from the current transformer is fed to the CAN controller whereby decisions about the compactor's fullness are based on this signal level; an Integrated Circuit Hydraulic Manifold on the mounting plate including at least one Directional Control Valve, a Relief Valve, a Hydraulic Filter and a Check Valve; and an electronic entry PIN pad device on the electrical control cabinet allowing users to enter a personal identification number and operational commands.

A heat press dual-zone temperature control system includes a first plate including an internal heating element and a first temperature sensor and a second plate including an internal heating element and a second temperature sensor. The first plate is arranged adjacent and parallel with the second plate. A controller is configured to provide temperature control, including controlling a temperature of the first plate to a first setpoint based on information from the first temperature sensor, and independently controlling a temperature of the second plate to a second setpoint based on information from the second temperature sensor. A user interface is communicatively coupled with the controller. The user interface includes a first zone configured to receive user input for the first plate and to display information about the first plate, and a second zone configured to receive user input for the second plate and to display information about the second plate.